Description of the Security and Quality Rollup for the .NET Framework 4.5.2 for Windows Vista Service Pack 2, Windows Server 2008 Service Pack 2, Windows 7 Service Pack 1, and Windows Server 2008 R2 Service Pack 1: April 11, 2017

Summary

This update resolves a vulnerability in the Microsoft .NET Framework that could allow remote code execution when the .NET Framework fails to properly validate input before loading libraries. An attacker who successfully exploits this vulnerability could take control of an affected system. The attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. To learn more about this vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2017-0160.

Important

If you install a language pack after you install this update, you must reinstall this update. Therefore, we recommend that you install any language packs that you need before you install this update. For more information, see Add language packs to Windows.

Additional information about this security update

For any Windows Management Instrumentation (WMI) applications returning the following error message:

Get-WmiObject: The method or operation is not implemented.

To temporarily disable this update, customers can apply the following registry entry to their system.

For more information about this security update as it relates to Windows Vista and Windows Server 2008, see the following article in the Microsoft Knowledge Base:

4014984 Security and Quality Rollup for the .NET Framework 2.0 Service Pack 2, 4.5.2, and 4.6 updates for Windows Vista Service Pack 2 and Windows Server 2008 Service Pack 2: April 11, 2017

How to obtain and install the update

Method 1: Windows Update

This update is available through Windows Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to get security updates automatically, see Windows Update: FAQ.

Method 2: Microsoft Update Catalog

To get the stand-alone package for Windows Vista and Windows Server 2008 for this update, go to the Microsoft Update Catalog.

To get the stand-alone package for Windows 7 and Windows Server 2008 R2 for this update, go to the Microsoft Update Catalog.

WSUS will open a browser window in which you may be prompted to install an ActiveX control. You must install the ActiveX control to continue.

Once the control is installed, you will see the Microsoft Update Catalog screen. For Windows Vista and Windows Server 2008, enter 4014984 in the Search box, and then click Search.For Windows 7 and Windows Server 2008 R2, enter 4014981 in the Search box, and then click Search.

Locate the .NET Framework packages that match the operating systems, languages, and processors in your environment. Click Add to add them to your basket.

When you have selected all the packages you need, click View Basket.

Click Import to import the packages to your WSUS server.

Click Close once the packages have been imported to return to WSUS.

The updates are now available for installation through WSUS.

Update deployment information

For deployment details for this security update, go to the following article in the Microsoft Knowledge Base: